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Finding the Fourth Proportional to 242,124.80, 363,964.80 and 172,486.40

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Solution

The fourth proportional to 242,124.80, 363,964.80 and 172,486.40 is: 259,283.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,124.80 : 363,964.80 = 172,486.40 : x
  2. Step 2: Convert to fraction form
    242,124.80/363,964.80 = 172,486.40/x
  3. Step 3: Cross multiply
    242,124.80x = 363,964.80 × 172,486.40
  4. Step 4: Simplify right side
    242,124.80x = 62,778,978,078.72
  5. Step 5: Solve for x
    x = 62,778,978,078.72/242,124.80
  6. Step 6: Final answer
    x = 259,283.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.